Engineers India Limited is an Indian public sector industrial technology, engineering consultancy and technology licensing company. It was set up in 1965 with the mandate of providing indigenous technology solutions across hydrocarbon projects. Over the years, it has also diversified into synergic sectors like non-ferrous metallurgy, infrastructure, water and wastewater management and fertilizers. EIL is headquartered at Bhikaji Cama Place, New Delhi. EIL also has an R&D complex at Gurgaon, a branch office in Mumbai, regional offices at Kolkata, Chennai, Vadodara, inspection offices at all major equipment manufacturing locations in India and overseas offices in London, Milan, Shanghai, Abu Dhabi. EIL has a wholly owned subsidiary Certification Engineers International Limited. It has set up a joint venture company namely Ramagundam Fertilizers and Chemicals Limited for enhancing the presence in fertilizers sector. Making its entry into the downstream oil and gas operations, EIL in 2021 acquired a minority stake in Numaligarh Refinery Limited in Assam. Wikipedia